Cast-iron-column construction.



P. WRIGHT. CASTIRON COLUNIN CONSTRUCTION.

APPLICATION FILED APR. l2 I9I7 .Patented Apr. 30, 1918.

y I Mu wiTNEssEs ATTORNEY [nr 'nPrnrr risica PAUL WRIGHT, 0F BIRMINGHAM, ALABAMA.

i CAST-IRON-COLUMN CONSTRUCTION.

Specification of Letters Patent. Fgmhmilnd Apr, 3U, 191@ p Applicatoniiled April 12, 1917. Serial No. 161,503.

To all 'whom it may concern: y

Be it known thatV I, PAUL Wiucrrr, a citizen of theV United States, residing at Birmingham, in the county of Jefferson and State of Alabama, have invented a new and useful Castflfron-Columnl Construction, of which the following is a specification.

This invention has referencek to cast iron column construction, and its object is to provide a construction for use in connection with concrete beams, framing and floors, whereby the iron columns replaceconcrete columns, and thereby save valuable space and provide less light obstruction than is the case with concrete columns of thesaine carrying capacity.

In accordance with the invention the columns comprise superposed sections with sepa# rately formed capssurmounting a lower column section and receiving the neXt higher column section with the cap sustaining the beam load without breaking the continuity of the column sections, andat the same time centering the sections.

,The structure is such that the columns may `be filled with concrete from end to end with the concrete reinforced atthe splices, thereby producing a rigid connection .capable of resisting a tendency to lift.

The cap constituting the splice may be of such construction as to support one or more beams, which latter may or may not be continuous over the support. Thus the economies of all-concrete constructions, that is column and beam constructions, are obtained.

The invention will be best understood from a consideration of the following detailed description, taken in connection with the accompanying drawings forming part of this specification, with the further understanding that while the drawings show a practical form of the invention, the latter is not confined to any strict conformity with the showing of the drawings, but may be changed and modified so long as such changes and modifications come within the scope of the appended claims.

In the drawings- Figure 1 is an elevation of an iron column and concrete beam construction ein bodying the invention.

Fig. 2 is a section through the column in a direction at right angles to the column as viewed in Fig'. l.

Fig2 3 is a plan view of the cmp@ Referring to the drawings, there is shown a column section l, which may be of cast iron, and another column section 2, which may also be of cast iron, and which is superposed on the section l. Thecolumns are both of tubular construction and are of materially less diameter than concrete columns of the same carrying capacity. Where `space is valuable the smaller diameter of the columns is decidedly advantageous. Moreover, such iron columns are less obstructive to light than is the casewith concrete columns of like carrying capacity.

Applied to the upper end of the lower column, considering the latter as upright, is a cap 3, having a floor et extended in one di-` rection. 0n opposite long sidesof the Hoor 4 are correspondingly extended upstanding flanges 5, and rising intermediately of the length of the floor 4f is an upstanding thimble 6 about an opening 7 through the cap,

the sleeve 6 being suitably spaced from the flanges 5. y y

Depending from the fioor Ll is an annular sleeve 8 concentric with the opening 7 and of greater internal diameter thanthe external diameter of the thimble 6 in the particular showing of the drawings. y

The upper end of the column l is machined so as to snugly fit into the sleeve S with a sufficient degree of accuracy where the metal surfaces are in contact to insure substantially true alinement and good bear ing. The column section 2 is also machined at the end surrounding and receiving the thimble 6 and where resting on the floor 4 immediately about the thimble 6 so as to insure substantially true alinement and good bearing. This brings all the contacting metal surfaces into direct load transmitting relation without reduction of section or inn ternal diameter. Moreover, the cap splice for the columns transmits the beam loads without breakingN the continuity of the columns, and at the same time centers the upper and lower sections.

The cap is applied to the lower column section and the column is filled with concrete and reinforcing rods 9 are introduced into the lower column section through the passage 7 in the cap,with the upper ends of the reinforcing rods rising above the top of the cap. The upper column section 2 is then applied to the cap, automatically een tering thereon with the reinforcing rods 9 entering the lower end of the upper col section, and said section is then fil-led with concrete, wher'eby the column made up of two or more sections has a continuous core of concrete filling it. The concrete serves t0 reinforce and stiften the column, and the concrete and reinforcing strips at the joint or splice provide a rigid connection capable of resisting all lifting tendencies, it'being understood, of course, that the column is fixed or anchored at its lower end,as is customary.

The floorl 4 supports concrete beams 1Q which may' be' ,formed'in the ordinary manner with reinforcing strips 11, but these features do not in'themselves `enter into the present invention. The cap 3 may support one ormore beams which may or may not 'be continuous over the support. The construction, however, is such that all the'benefits of an all-concrete beam and column arrangement are obtained while certain disadvantages are eliminated, among Awhich load and may 'be arranged to support either one beam or a plurality of beams.

The cap with the flooring or bracket con stituting a support for the beams provides for thetransmission of the column loads without reduction of column section where passing` through the floor. Moreover, the combined cap and bracket makes possible the use of plain columns where otherwise A and spaced eXteriorly therefrom, with the lower column fitting snugly into the cap, concrete filling for and uniting the columns, and concrete beams on the cap integrally joined about the column section above 'the cap and filling the space between the cap and the upper column section.

3. Metal and concrete column construe-- tion, comprising superposed tubular metal sections with a continuous interior cinici-ete filling and beams integrally joined about and in contact with the column sections at their junction.

In testimony, that I claim the foregoing asmy own, I have hereto affixed my signature in the presence of two witnesses.

PAUL VVRIGHII Witnesses:

Roy B. SUMMERS,

E. WV. HERRMANN.

Copies fthis patent may be obtained for 'five cents each, by addressing the Commissioner of Yat-ents, Tfasliiiigton, D; C. 

